/*
*Copyright (c) 2005-2013, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
*WSO2 Inc. licenses this file to you under the Apache License,
*Version 2.0 (the "License"); you may not use this file except
*in compliance with the License.
*You may obtain a copy of the License at
*
*http://www.apache.org/licenses/LICENSE-2.0
*
*Unless required by applicable law or agreed to in writing,
*software distributed under the License is distributed on an
*"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
*KIND, either express or implied.  See the License for the
*specific language governing permissions and limitations
*under the License.
*/

package org.wso2.carbon.identity.oauth.preprocessor;

import org.apache.commons.codec.digest.DigestUtils;

/**
 * An implementation of <Code>TokenPersistencePreprocessor</Code> which returns the SHA-256
 * hash of the plain text token.
 * @see TokenPersistencePreprocessor
 * @see PlainTextTokenPersistencePreprocessor
 */
public class SHA256TokenPersistencePreprocessor implements TokenPersistencePreprocessor {

    public String getPreprocessedToken(String plainToken){
        return DigestUtils.sha256Hex(plainToken);
    }

}
